Home / 42,421.40-63,668.55-18,765.35

Finding the Fourth Proportional to 42,421.40, 63,668.55 and 18,765.35

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Solution

The fourth proportional to 42,421.40, 63,668.55 and 18,765.35 is: 28,164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,421.40 : 63,668.55 = 18,765.35 : x
  2. Step 2: Convert to fraction form
    42,421.40/63,668.55 = 18,765.35/x
  3. Step 3: Cross multiply
    42,421.40x = 63,668.55 × 18,765.35
  4. Step 4: Simplify right side
    42,421.40x = 1,194,762,624.74
  5. Step 5: Solve for x
    x = 1,194,762,624.74/42,421.40
  6. Step 6: Final answer
    x = 28,164.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.